Security key
457669307
INSMED Inc - Common Stock, par value $0.01 per share (INSM)
CUSIP: 457669307
Q1 2026 13F Holders as of 31 Mar 2026
- Type / Class
- Equity / Common Stock, par value $0.01 per share
- Shares outstanding
- 215,451,077
- Total 13F shares
- 216,262,301
- Share change
- +3,048,906
- Total reported value
- $34,947,864,406
- Put/Call ratio
- 70%
- Price per share
- $163.52
- Number of holders
- 661
- Value change
- +$468,602,908
- Number of buys
- 368
- Number of sells
- 305
Report period
Q1 2026
Institutions
661
Top holders
10
INSM full security history
Previous quarter: Q4 2025
INSMED Inc SEC filings
INSMED Inc company facts
Broader feeds
Reporting periods
Holder history for CUSIP 457669307
Recent filing periods:
Top shareholders of INSM - INSMED Inc - Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| JPMORGAN CHASE & CO |
13F
13D/G
|
Company |
11%
from 13D/G
|
23,199,512
|
$4,037,643,311 | — | 31 Dec 2025 | |
| Darwin Global Management, Ltd. |
13F
13D/G
|
Company |
7.8%
from 13D/G
|
20,933,277
|
$3,644,274,193 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
6.6%
from 13D/G
|
15,065,052
|
$2,621,921,693 | — | 31 Dec 2025 | |
| FMR LLC |
13D/G
13F
|
Company |
6.1%
|
13,145,167
|
$2,105,592,773 | $0 | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
|
Vanguard Capital Management |
5.3%
|
11,514,893
|
$1,882,915,303 | $0 | 31 Mar 2026 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13D/G
13F
|
T. Rowe Price Associates, Inc. · Company |
3.3%
|
6,932,009
|
$998,278,616 | -$619,088,189 | 30 Sep 2025 | |
| David W. J. Mcgirr |
3/4/5
|
Director |
0.05%
|
97,723
|
$17,196,316 | -$451,535 | 09 Feb 2026 | |
| Orlov S. Nicole Schaeffer |
3/4/5
|
Chief People Strategy Officer |
0.02%
|
41,754
|
$7,423,026 | -$46,293,433 | 02 Jan 2026 | |
| VANGUARD GROUP INC |
13F
|
Company |
9.8%
|
21,076,344
|
$3,668,126,910 | — | 31 Dec 2025 | |
| BAKER BROS. ADVISORS LP |
13F
|
Company |
3.1%
|
6,592,746
|
$1,147,401,514 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.4%
|
5,201,744
|
$905,311,526 | — | 31 Dec 2025 | |
| Capital International Investors |
13F
|
Company |
2.4%
|
5,151,671
|
$896,597,082 | — | 31 Dec 2025 | |
| Artisan Partners Limited Partnership |
13F
|
Company |
2.2%
|
4,843,749
|
$843,006,016 | — | 31 Dec 2025 | |
| RTW INVESTMENTS, LP |
13F
|
Company |
2.2%
|
4,842,879
|
$842,854,661 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
2%
|
4,350,995
|
$757,247,170 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2%
|
4,299,052
|
$751,935,864 | — | 31 Dec 2025 | |
| Orbis Allan Gray Ltd |
13F
|
Company |
1.9%
|
4,179,957
|
$727,479,716 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
1.4%
|
2,910,971
|
$506,625,393 | — | 31 Dec 2025 | |
| FRANKLIN RESOURCES INC |
13F
|
Company |
1.3%
|
2,755,536
|
$479,573,482 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
1.3%
|
2,726,857
|
$474,582,256 | — | 31 Dec 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
0.91%
|
1,968,857
|
$342,660,797 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.87%
|
1,867,635
|
$325,043,194 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.8%
|
1,725,681
|
$300,337,528 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.76%
|
1,631,906
|
$284,017,467 | — | 31 Dec 2025 | |
| Duquesne Family Office LLC |
13F
|
Company |
0.69%
|
1,481,752
|
$257,884,000 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.65%
|
1,390,042
|
$241,922,940 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.61%
|
1,311,654
|
$228,280,262 | — | 31 Dec 2025 | |
| Castle Hook Partners LP |
13F
|
Company |
0.58%
|
1,253,568
|
$218,170,975 | — | 31 Dec 2025 | |
| Integral Health Asset Management, LLC |
13F
|
Company |
0.58%
|
1,250,000
|
$217,550,000 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.58%
|
1,244,913
|
$216,664,732 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.57%
|
1,238,438
|
$215,537,748 | — | 31 Dec 2025 | |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.57%
|
1,221,096
|
$212,519,548 | — | 31 Dec 2025 | |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
|
Company |
0.55%
|
1,183,029
|
$205,894,000 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.54%
|
1,157,295
|
$201,415,622 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.48%
|
1,027,355
|
$178,800,864 | — | 31 Dec 2025 | |
| Fiera Capital Corp |
13F
|
Company |
0.46%
|
992,892
|
$172,802,924 | — | 31 Dec 2025 | |
| NWI MANAGEMENT LP |
13F
|
Company |
0.46%
|
988,460
|
$172,032,000 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.45%
|
962,156
|
$167,453,630 | — | 31 Dec 2025 | |
| Pictet Asset Management Holding SA |
13F
|
Company |
0.45%
|
958,963
|
$167,256,939 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.44%
|
943,306
|
$164,172,977 | — | 31 Dec 2025 | |
| Jefferies Financial Group Inc. |
13F
|
Company |
0.43%
|
926,339
|
$161,220,040 | — | 31 Dec 2025 | |
| Amundi |
13F
|
Individual |
0.43%
|
916,998
|
$159,594,332 | — | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.42%
|
915,419
|
$159,319,523 | — | 31 Dec 2025 | |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC |
13F
|
Company |
0.42%
|
909,080
|
$158,216,283 | — | 31 Dec 2025 | |
| SEI INVESTMENTS CO |
13F
|
Company |
0.41%
|
890,170
|
$154,924,615 | — | 31 Dec 2025 | |
| FIL Ltd |
13F
|
Company |
0.39%
|
838,509
|
$145,934,106 | — | 31 Dec 2025 | |
| Clearbridge Investments, LLC |
13F
|
Company |
0.38%
|
819,011
|
$142,540,702 | — | 31 Dec 2025 | |
| Holocene Advisors, LP |
13F
|
Company |
0.37%
|
801,165
|
$139,434,757 | — | 31 Dec 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
0.37%
|
800,555
|
$139,334,263 | — | 31 Dec 2025 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.36%
|
779,254
|
$135,649,715 | — | 31 Dec 2025 |
Institutional Holders of INSMED Inc - Common Stock, par value $0.01 per share (INSM) as of Q1 2026
As of 31 Mar 2026,
INSMED Inc - Common Stock, par value $0.01 per share (INSM) was held by
661 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
216,262,301 shares.
The largest 10 holders included
JPMORGAN CHASE & CO, Darwin Global Management, Ltd., BlackRock, Inc., FMR LLC, VANGUARD PORTFOLIO MANAGEMENT LLC, VANGUARD CAPITAL MANAGEMENT LLC, BAKER BROS. ADVISORS LP, Artisan Partners Limited Partnership, D. E. Shaw & Co., Inc., and Capital International Investors.
This page lists
662
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
673
Q1 2026 holders
661
Holder diff
-12
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.